The game is a good work out. I use this one and others to work out with and I feel with this game I get a good workout. I do feel that I can do more after but it makes me sweat. It works your full body so you can feel it. I have used this one a number of time and I am about to buy.
The one thing that i don't like is that they ask you to put the remote in your pocket to do some of the work outs. That I do have issues with that sometimes, but I am looking into the Zumba belt to see if that works that way I don't have to worry about the remote falling when I do some of them moves.
Also when you start up the game go to the setting and change the Health and Lifestyle part it had me stuck for a while and my husband had to look up how to by pass that. If you don't change that you will give up on the game. I almost did and I like working out with the game.
It's not the worst Biggest Loser game I've tried. The game set up and exercises were good. Voice encouragement from Bob, Jillian & Allie were all good throughout the workout (Allie narrates the end results- tells you that you did well, yadda yadda yadda).
My only complaint was avatar detection was not great. I was keeping up with Bob & Jillian, but my avatar was seriously lagging behind. It got annoying after awhile.